Is there any way getting a more accurate behavior of the pie menus on hover?
Pie Menu Settings


Pie Menus
Animation Timeout
Length of animation when opening Pie Menus.
Tap Key Timeout
Keystrokes held longer than this will dismiss the menu on release (in 1/100ths of a second).
Recenter Timeout
The window system tries to keep the pie menu within the window borders. Pie menus will use the initial mouse position as center for
this amount of time, measured in 1/100ths of a second. This allows for
fast dragged selections.
Radius
The size of the Pie Menu set with the distance (in pixels) of the menu items from the center of the pie menu.
Threshold
Distance from center before a selection can be made.
Confirm Threshold
Distance threshold after which selection is made (zero disables).

Setting from python console:
&gt;&gt;&gt; C.preferences.view.pie_menu_threshold = 1
&gt;&gt;&gt; C.preferences.view.pie_menu_radius = 20
&gt;&gt;&gt;